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Historically a nation of immigrants, the United States is home to nearly 41 million immigrants, who represent 13 percent of the total population and play a key role in the economic, civic, and cultural life of the country. The research collected here covers many facets of immigration to the United States, by the numbers and how immigrants fare in the country's classrooms and workplaces, the policies and regulations that shape the admission of new immigrants, the enforcement programs and polices in place at U.S. borders and within the interior, and integration policies and efforts taking place in local communities, in states, and at the federal level.

Nearly 2 million of the 4 million-strong Vietnamese diaspora live in the United States, with many having come in the immediate aftermath of the Vietnam War and during the long-running Indochinese refugee crisis. With April 30 marking the 40th anniversary of the fall of Saigon, learn more about the Vietnamese diaspora in the United States and Vietnam's contemporary and historical migration experience.

An estimated 41.3 million immigrants lived in the United States in 2013, about 13 percent of the total U.S. population, constituting the world's largest foreign-born population. This Spotlight from MPI's Jie Zong and Jeanne Batalova offers the most current and sought-after data on immigrants in the United States—including origin, educational attainment, the unauthorized, deportations, and more—in one easy-to-use resource.

MPI has compiled in one easy-to-access location its key research and data resources on issues, policies, enforcement programs, and more that relate to the immigration reform debate underway in Washington.

Immigration has contributed to many of the economic, social, and political processes that are foundational to the United States as a nation since the first newcomers arrived over 400 years ago. After brushes with immigration reform that began in 2001 and continued in 2006 and 2007, the United States seems to be on the threshold of overhauling the legal immigration system in the most substantive way since 1965. This article provides a comprehensive overview of major legislation and events affecting U.S. immigration throughout history, legal and illegal immigration flows, postrecession immigration trends, and more.

This article provides a comparative analysis of health outcomes of Mexican immigrant women in the United States, assessing the results against what is known as the immigrant paradox—the idea that these women enjoy a better state of health overall than might be expected, given their socioeconomic status and very limited health insurance coverage.

Since 1990, the number of Central American immigrants in the United States has nearly tripled. This immigrant population grew faster than any other region-of-origin population from Latin America between 2000 and 2010. This article focuses on a wide range of characteristics of Central American immigrants residing in the United States, including the population's size, geographic distribution, admission categories, and demographic and socioeconomic characteristics.

Across-the-board federal budget cuts went into effect on March 1, and effects are already being felt in a wide range of immigration functions. This article explores how the sequester has and will be impacting the U.S. immigration system, focusing on the federal government's recent decision to release immigration detainees on bond or to less costly supervision programs. It also takes a look at stateside processing of I-601 waivers, new policy guidance on immigration enforcement at community establishments, and more.

Over the past five decades, Mexicans have constituted the single largest group of immigrants to the United States originating from Latin America. In 2011, 11.7 million Mexican immigrants resided in the United States, representing 29 percent of the U.S. immigrant population and close to 4 percent of the overall U.S. population. This article examines the latest data on Mexican immigrants in the United States, including population size, geographic distribution, admission categories, and demographic and socioeconomic characteristics.

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In a report by MPI's Labor Markets Initiative, noted economist and Georgetown University Public Policy Institute Professor Harry J. Holzer examines the economic reasoning and research on these questions and looks at the policy options that shape the impact of less-skilled immigration on the economy. The discussion is on what policy reform would best serve native-born American workers, consumers, and employers, as well as the overall U.S. economy.

Commissioner Bersin details his agenda for his agency and discusses illegal immigration, border enforcement, the impact to the economy on migration flows, the future of the Secure Border Initiative, drug trafficking, and other topics in this wide-ranging conversation with MPI Senior Fellow Doris Meissner and the audience.

This important MPI report challenges the conventional wisdom about the immigrant workforce, using a sophisticated new method of analysis that permits deeper examination of how workers – immigrant and native-born – fare by economic sector, the skill level of their jobs, and educational attainment.

This discussion is an overview of a report undertaken by a team at the Columbia University School of International Public Affairs which examines the U.S. refugee resettlement Program and offers a strong set of recommendations and observations about the program.

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Recent Activity

This final report from the Regional Migration Study Group outlines the powerful demographic, economic, and social forces reshaping Mexico and Central America and changing longstanding migration dynamics with the United States. It offers a forward-looking, pragmatic agenda for the region, focusing on new collaborative approaches on migration and human-capital development to strengthen regional competitiveness.

This report examines migration flows from Mexico to the U.S. since the 1990s and highlights key economic factors linked to migration trends. These findings are analyzed to forecast Mexican migration flows.

This fact sheet compares key components of immigration reform outlined in the 2013 Senate immigration bill against provisions included in bills considered by the Senate in 2006 and 2007: border security, detention, and enforcement; worksite enforcement; visa reforms; earned legalization of unauthorized immigrants; strengthening the U.S. economy and workforce; and integration of new Americans.

With the prospects for immigration reform greater than they have been in more than a decade and the U.S. economy slowly shrugging off the effects of the recession, the United States may be on the cusp of historic changes that make the immigration system a more effective tool for innovation, economic growth and the competitiveness of its firms—large and small.

MPI's President, Demetrios G. Papademetriou, and the Editor-in-Chief of The American Prospect, Kit Rachlis, engage in a lively Google Hangout discussion about the policies and politics that have created the United States' antiquated, inflexible immigration system and how to create a modern-day, flexible immigration system suited for the competitiveness of the 21st century.

This discussion covers some of the most difficult issues that must be addressed if the United States is to reform its immigration system in ways that work not only for today’s reality but tomorrow’s future.

In the Spotlight

State Immigration Data Profiles

Want the latest facts and data on immigrants in the United States? Search U.S. Census data on U.S. immigrants and the native born nationally and by state based on demographic, language and education, workforce, and income indicators.

Want the latest estimates and characteristics of unauthorized immigrants in the United States, including those potentially eligible for relief from deportation? Use this innovative data tool to get population estimates and much more—including countries of origin, recency of arrival, educational enrollment and attainment, industries of employment, incomes, English proficiency, and health care coverage—at the national level, by state, and for top counties.